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UP: Fachverband Umweltphysik
UP 9: Methoden II
UP 9.4: Vortrag
Donnerstag, 5. März 2009, 17:24–17:36, VMP 8 R206
Passive airborne remote-sensing measurements of atmospheric methane (CH4) and carbon dioxide (CO2) with the MAMap instrument: an overview of measurements performed during 2007 and 2008. — •Konstantin Gerilowski1, Andreas Tretner2, Michael Buchwitz1, Jörg Erzinger2, John Burrows1, and Heinrich Bovensmann1 — 1Institute of Environmental Physics (IUP), University of Bremen, Otto-Hahn-Allee 1, PO Box 33 04 40, 28334 Bremen, Germany — 2German Research Centre for Geosciences (GFZ), Telegrafenberg Haus B, 14473 Potsdam, Germany
The Methane Airborne Mapper (MAMap) was designed for passive remote sensing of atmospheric CH4 and CO2 columns between aircraft and Earth's surface. The instrument is specified to detect mixing ratio variations <3% (total column) of the atmospheric background below the aircraft with a ground pixel size of 20m x 20m (700m flight height, 200 km/h flight speed). It allows the detection of CH4 and CO2 gradients on a local and regional scale and provides a link between ground-based and satellite-based measurements. For data processing a modified version of SCIAMACHY's WFM-DOAS algorithm has been applied. In 2007 and 2008 several flight campaigns over wetlands and power plants have been carried out and correlated to ground-based measurements. In November 2008 also a transect from Oshawa (Canada) to Punta Arenas (Chile) was conducted onboard the AWI POLAR 5 aircraft. To demonstrate the instrument's performance, a set of MAMap measurements from different targets will be presented.